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Appalachian Gap (west side)

12678.3 m · net rise 400.1 m · total ascent 526.0 m · overall 3.2% · confidence: high · Vermont · share

Shape: stepped — 55% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 411 m.

Not yet matched against documented climbs — the measurement stands on its own.

Gradient ladder what do windows mean?

may_continue_beyond_end Extent detection suggests reviewing where this climb starts/ends.

Map

Check this route yourself: Google Maps route via their router · Street View at the base where coverage exists · OSM way 19682719 highlights the mapped road · geojson.io our exact measured line · OpenTopoMap

This climb's data: OCL JSON — the full gradient ladder, quality flags and provenance in the OpenClimb Ladder format.

Measured, not vetted. This page records what the laser record shows about the road's shape — nothing more. Nobody has necessarily ridden or inspected this road for the survey, and a page here is not a recommendation and no guarantee that the road is open, surfaced, rideable or safe. Gates, private sections, missing rights of way and hazards do not show up in elevation data. Check access and conditions on the ground and make your own judgment.

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Topo (contours) Vector   © OpenStreetMap contributors · topo tiles © OpenTopoMap (CC-BY-SA) · vector tiles OpenFreeMap

Profile

Provenance

{
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
  ],
  "diagnostic_windows_m": [
    2.0,
    3.0
  ],
  "elevation_crs": "EPSG:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
    "data/cache/usa/vt/USGS_1M_18_x65y490_VT_Statewide_A23.tif",
    "data/cache/usa/vt/USGS_1M_18_x66y490_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-22T08:08:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_ids": [
    19682719,
    19683977,
    695807249,
    695807250,
    364838710,
    19698800
  ],
  "osm_versions": {
    "19682719": 18,
    "19683977": 16,
    "695807249": 5,
    "695807250": 6,
    "364838710": 7,
    "19698800": 25
  },
  "osm_timestamps": {
    "19682719": "2024-11-06 23:16:49+00:00",
    "19683977": "2021-12-02 04:38:51+00:00",
    "695807249": "2021-12-02 04:38:51+00:00",
    "695807250": "2021-12-02 04:38:51+00:00",
    "364838710": "2021-12-02 04:38:51+00:00",
    "19698800": "2022-09-13 18:32:30+00:00"
  },
  "osm_retrieved_at": "2026-08-22T08:07:59+00:00",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
    "x65y490",
    "x66y490"
  ],
  "climb_origin": "named",
  "notes": "VT-17 from Bristol/Jerusalem side, full approach incl. the Baby Gap prelude (467 m crest) and a ~126 m-descent hollow before the final ramp. Extent completed 2026-08-22: previous seed crested at Baby Gap only (4,635 m short of the gap); route now ends 14 m from GNIS 'Appalachian Gap' (VTrans: paved throughout). Consider a separate Baby Gap entry later.",
  "canopy_source": {
    "kind": "ept_corridor_max_return",
    "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
    "ept_crs": "EPSG:3857",
    "station_coverage": 1.0,
    "cell_ground_m": 1.0,
    "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
}